| EPSRC Reference: |
GR/S95435/01 |
| Title: |
A Lagrangian Analysis Technique for Ocean Wave Submersion and Impact on Ships and Offshore Structures |
| Principal Investigator: |
Vignjevic, Professor R |
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| Department: |
Sch of Engineering |
| Organisation: |
Cranfield University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 2004 |
Ends: |
31 March 2007 |
Value (£): |
159,790
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Transport Systems and Vehicles |
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Summary on Grant Application Form |
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This proposal is aimed at developing an analysis technique for predicting the interaction of large ocean waves with ships and offshore structures specifically with respect to the extent of deck submersion, deck pressures and impact loads that are generated. In the past, this problem has been addressed by using numerical boundary integral and finite element solutions derived from an Eulerian formulation of the problem. However, the highly sheared separated flows typical of this interaction can be more efficiently dealt with by a Lagrangian formulation. Specifically, a smoothed particle hydrodynamics (SPH) based method offers the prospect of representing the physics of the ocean wave run up, deck submergence and impact phenomenon much more efficiently utilising a meshless computation scheme. This proposal is concerned with developing, implementing and testing such a Lagrangian analysis technique based on an SPH formulation. Particular attention will be placed on modelling impact mechanics as well as introducing structural deformability and local cavitation effects into the impact modelling. The analysis will be developed and implemented within a coupled SPH - structural finite element numerical solver and tested against model test data for an offshore loading buoy and a floating oil production vessel. The coupled solver allows the fluid to be modelled using SPH and the structure by structural finite elements, allowing accurate treatment of the structural deformation. The development and initial verification of this technique will address a long standing problem in the offshore and shipping industries of designing against loss and damage due to impact with high waves. This work will, therefore, be of significant benefit to UK industry.The research will be undertaken at Cranfield University by a postdoctoral research associate. The project duration is 36 months
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cranfield.ac.uk |